Due in 30 mins pls help!

I'vehad to solve these questions before and perosnally math      way helps its a site and helps solve questions check it out and thanks me later(: Have a nice afternoon/night/morning.

Step-by-step explanation:

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

43

step-by-step explanation:

not sure if this is supposed to be a trick question. 43 is the only one that makes any sense.